scrimping bar

from The Collaborative International Dictionary of English v.0.48

Scrimping \Scrimp"ing\,
   a. & n. from {Scrimp}, v. t.
   [1913 Webster]

   {Scrimping bar}, a device used in connection with a calico
      printing machine for stretching the fabric breadthwise so
      that it may be smooth for printing. --Knight.
      [1913 Webster]